Area Estimation and Distribution Analysis of Subsurface Flow Constructed Wetlands at Regional Scale--Take Guangzhou City for Example

2016 International Conference on Environmental Engineering and Sustainable Development

生态环境科学;经济学

Yuan, S.X.^1,2,3 ; Tang, G.L.^1 ; Xiong, H.X.^1,2,3 ; Chen, J.^1 ; Yin, X.L.^1 ; Huang, G.Q.^1,2,3

Guangdong Open Laboratory of Geospatial Information Technology and Application, Guangzhou Institute of Geography, 100 Xianlie Middle Rd, Yuexiu, Guangzhou, Guangdong

510070, China^1

Guangzhou Institute of Geochemistry, Graduate School, Chinese Academy of Sciences, Wushan, Guangzhou, Guangdong

510640, China^2

University of Chinese Academy of Science, Beijing

100049, China^3

关键词: Area estimation;    Constructed wetlands;    Constructed wetlands (CWs);    Distribution analysis;    Domestic sewage;    Guangzhou city;    Regional scale;    Subsurface flow constructed wetlands;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/51/1/012025/pdf
DOI  :  10.1088/1742-6596/51/1/012025

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, Area of Constructed Wetlands (CWs) required for treatment of domestic sewage generated by 13 million people was calculated in accordance with the distribution of existing population in Guangzhou City and mathematical model of CWs. By comparing this with land use data, the distribution of constructed wetlands at construction regional scale was simulated with GIS. The results show that, Guangzhou generate about 3.88 million m3domestic sewage per day, which shall be treated with 59.37 km2CWs. Assuming that a single wetland bed is 300 m2, total 197,905 wetland beds shall be required in the city. Based on the analysis and statistics on data of second national land survey of Guangzhou City with GIS, there are enough ponds, bare lands, other grasslands and other garden plots in Guangzhou that can be used for construction of regional scale CWs, but the distribution of available lands in different regions is uneven. Constructed wetlands at regional scale are mainly distributed around Baini Channel, Tianma River, Xinjie River, Liuxi River Valley, Zengjiang River Valley and on both sides of the Pearl River through Panyu and Nansha.